Home / 89,721.40-123,813.90-49,438.88

Finding the Fourth Proportional to 89,721.40, 123,813.90 and 49,438.88

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Solution

The fourth proportional to 89,721.40, 123,813.90 and 49,438.88 is: 68,224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,721.40 : 123,813.90 = 49,438.88 : x
  2. Step 2: Convert to fraction form
    89,721.40/123,813.90 = 49,438.88/x
  3. Step 3: Cross multiply
    89,721.40x = 123,813.90 × 49,438.88
  4. Step 4: Simplify right side
    89,721.40x = 6,121,220,544.43
  5. Step 5: Solve for x
    x = 6,121,220,544.43/89,721.40
  6. Step 6: Final answer
    x = 68,224.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.